I can’t think of any ornamental tree that produces an edible fruit, nor any fruit-bearing tree that would make for a good sound screen. Only some would even provide good shade: most fruit trees stay quite short and are very short-lived compared to ornamentals.

I understand the frustration, but a bunch of slimy little ornamental plums covering the road is a hazard, and there’s no guaranteeing females don’t fruit as a result of animal activity etc